Hole-doped manganites with the perovskite structure exhibit a variety of superlative properties because of close competition among ferromagnetic metallic, paramagnetic insulating, as well as various charge, spin, and orbitally ordered phases. We have recently observed random telegraph noise (RTN) in low-temperature conductance measurements of epitaxially-grown La$_{2/3}$Sr$_{1/3}$MnO$_3$ nanowires patterned by electron-beam lithography and ion milling to widths of $\sim$ 80nm. The RTN is apparent at temperatures less than 30K. It is thought that the RTN is the result of domain fluctuations, which are more clearly observable in such narrow wires.
*This research was supported by the DOE-DMS under grant DE-FG02-07ER46453 through the Frederick Seitz Materials Research Laboratory at the University of Illinois at Urbana-Champaign.
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Authors
Nicholas Bronn
University of Illinois at Urbana-Champaign, Department of Physics, Materials Research Laboratory
Xiaoqian Chen
Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign
University of Illinois at Urbana-Champaign, Department of Physics, Materials Research Laboratory
Jason Hoffman
Argonne National Laboratory, Center for Nanoscale Materials
Anand Bhattacharya
Materials Science Division and Center for Nanoscale Materials, Argonne National Laboratory
MSD/CNM, Argonne Natl Lab
Argonne National Laboratory
Argonne National Laboratory, Center for Nanoscale Materials
Peter Abbamonte
University of Illinois at Urbana-Champaign, Department of Physics, Materials Research Laboratory
Nadya Mason
University of Illinois at Urbana-Champaign
Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign
University of Illinois Urbana-Champaign
University of Illinois at Urbana-Champaign, Department of Physics, Materials Research Laboratory
